lib/as3/import.c

   1 /* import.c
   2
   3    Extension module for the rfxswf library.
   4    Part of the swftools package.
   5
   6    Copyright (c) 2009 Matthias Kramm <kramm@quiss.org>
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  21
  22 #include "import.h"
  23 #include "abc.h"
  24 #include "registry.h"
  25 #include "tokenizer.h"
  26 #include "../os.h"
  27
  28 static void import_code(void*_abc, char*filename, int pass);
  29
  30 void as3_import_abc(char*filename)
  31 {
  32     TAG*tag = swf_InsertTag(0, ST_RAWABC);
  33     memfile_t*file = memfile_open(filename);
  34     tag->data = file->data;
  35     tag->len = file->len;
  36     abc_file_t*abc = swf_ReadABC(tag);
  37     import_code(abc, filename, 0);
  38     import_code(abc, filename, 1);
  39     swf_FreeABC(abc);
  40     memfile_close(file);
  41     free(tag);
  42 }
  43
  44 void as3_import_swf(char*filename)
  45 {
  46     SWF* swf = swf_OpenSWF(filename);
  47     if(!swf)
  48         return;
  49     TAG*tag = swf->firstTag;
  50
  51     /* pass 1 */
  52     while(tag) {
  53         if(tag->id == ST_DOABC || tag->id == ST_RAWABC) {
  54             abc_file_t*abc = swf_ReadABC(tag);
  55             import_code(abc, filename, 0);
  56             swf_FreeABC(abc);
  57         }
  58         tag = tag->next;
  59     }
  60
  61     /* pass 2 */
  62     while(tag) {
  63         if(tag->id == ST_DOABC || tag->id == ST_RAWABC) {
  64             abc_file_t*abc = swf_ReadABC(tag);
  65             import_code(abc, filename, 1);
  66             swf_FreeABC(abc);
  67         }
  68         tag = tag->next;
  69     }
  70
  71     swf_FreeTags(swf);
  72     free(swf);
  73 }
  74
  75 void as3_import_file(char*filename)
  76 {
  77     FILE*fi = fopen(filename, "rb");
  78     if(!fi) return;
  79     char head[3];
  80     fread(head, 3, 1, fi);
  81     fclose(fi);
  82     if(!strncmp(head, "FWS", 3) ||
  83        !strncmp(head, "CWS", 3)) {
  84         as3_import_swf(filename);
  85     } else {
  86         as3_import_abc(filename);
  87     }
  88 }
  89
  90 static int compare_traits(const void*v1, const void*v2)
  91 {
  92     trait_t* x1 = *(trait_t**)v1;
  93     trait_t* x2 = *(trait_t**)v2;
  94     int i = strcmp(x1->name->ns->name, x2->name->ns->name);
  95     if(i)
  96         return i;
  97     return strcmp(x1->name->name, x2->name->name);
  98 }
  99
 100 static classinfo_t*resolve_class(char*filename, char*what, multiname_t*n)
 101 {
 102     if(!n) return 0;
 103     if(!n->name[0] || !strcmp(n->name, "void")) return 0;
 104
 105     classinfo_t*c = 0;
 106     if(n->ns && n->ns->name) {
 107         c = (classinfo_t*)registry_find(n->ns->name, n->name);
 108     } else if(n->namespace_set) {
 109         namespace_list_t*s = n->namespace_set->namespaces;
 110         while(s) {
 111             c = (classinfo_t*)registry_find(s->namespace->name, n->name);
 112             if(c)
 113                 break;
 114             s = s->next;
 115         }
 116     }
 117
 118     if(!c) {
 119         as3_warning("import %s: couldn't resolve %s %s.%s", filename, what, n->ns->name, n->name);
 120         return 0;
 121     }
 122     if(c->kind != INFOTYPE_CLASS)
 123         as3_warning("import %s: %s %s resolves to something that's not a class", filename, what, n->name);
 124     return c;
 125 }
 126
 127 static void import_code(void*_abc, char*filename, int pass)
 128 {
 129     abc_file_t*abc = _abc;
 130     int t;
 131     if(pass==0) {
 132         for(t=0;t<abc->classes->num;t++) {
 133             abc_class_t*cls = array_getvalue(abc->classes, t);
 134             U8 access = cls->classname->ns->access;
 135             if(access==ACCESS_PRIVATE ||
 136                access==ACCESS_PACKAGEINTERNAL)
 137                 continue;
 138             //if(!strncmp(cls->classname->ns->name, "__AS3", 5))
 139             //    continue;
 140
 141             const char*package = strdup(cls->classname->ns->name);
 142             const char*name = strdup(cls->classname->name);
 143
 144             multiname_list_t*i=cls->interfaces;
 145             classinfo_t*c = classinfo_register(access, package, name, list_length(i));
 146             c->flags|=FLAG_BUILTIN;
 147
 148             if(cls->flags & CLASS_FINAL)
 149                 c->flags |= FLAG_FINAL;
 150             if(cls->flags & CLASS_INTERFACE)
 151                 c->flags |= FLAG_INTERFACE;
 152             if(!(cls->flags & CLASS_SEALED))
 153                 c->flags |= FLAG_DYNAMIC;
 154         }
 155         return;
 156     }
 157
 158     for(t=0;t<abc->classes->num;t++) {
 159         abc_class_t*cls = array_getvalue(abc->classes, t);
 160         const char*package = strdup(cls->classname->ns->name);
 161         const char*name = strdup(cls->classname->name);
 162         classinfo_t*c = (classinfo_t*)registry_find(package, name);
 163         if(!c) continue;
 164
 165         int nr = 0;
 166         multiname_list_t*i = cls->interfaces;
 167         while(i) {
 168             c->interfaces[nr++] = resolve_class(filename, "interface", i->multiname);
 169             i = i->next;
 170         }
 171         c->superclass = resolve_class(filename, "superclass", cls->superclass);
 172
 173         trait_list_t*l=0;
 174         char is_static = 0;
 175         l = cls->traits;
 176         while(l) {
 177             trait_t*trait = l->trait;
 178             U8 access = trait->name->ns->access;
 179             if(access==ACCESS_PRIVATE)
 180                 goto cont;
 181             const char*name = trait->name->name;
 182             char* ns= ACCESS_NAMESPACE?strdup(trait->name->ns->name):"";
 183             if(registry_findmember(c, ns, name, 0))
 184                 goto cont;
 185             name = strdup(name);
 186
 187             memberinfo_t*s = 0;
 188             if(trait->kind == TRAIT_METHOD) {
 189                 s = (memberinfo_t*)methodinfo_register_onclass(c, access, ns, name);
 190                 s->return_type = resolve_class(filename, "return type", trait->method->return_type);
 191             } else if(trait->kind == TRAIT_SLOT ||
 192                       trait->kind == TRAIT_GETTER) {
 193                 s = (memberinfo_t*)varinfo_register_onclass(c, access, ns, name);
 194                 s->type = resolve_class(filename, "type", trait->type_name);
 195             } else {
 196                 goto cont;
 197             }
 198
 199             s->flags = is_static?FLAG_STATIC:0;
 200             s->flags |= FLAG_BUILTIN;
 201             s->parent = c;
 202
 203             cont:
 204             l = l->next;
 205             if(!l && !is_static) {
 206                 l = cls->static_traits;
 207                 is_static = 1;
 208             }
 209         }
 210     }
 211
 212 #   define IS_PUBLIC_MEMBER(trait) ((trait)->kind != TRAIT_CLASS && (trait)->name->ns->access != ACCESS_PRIVATE)
 213
 214     /* count public functions */
 215     int num_methods=0;
 216     for(t=0;t<abc->scripts->num;t++) {
 217         trait_list_t*l = ((abc_script_t*)array_getvalue(abc->scripts, t))->traits;
 218         for(;l;l=l->next) {
 219             num_methods += IS_PUBLIC_MEMBER(l->trait);
 220         }
 221     }
 222     trait_t**traits = (trait_t**)malloc(num_methods*sizeof(trait_t*));
 223     num_methods=0;
 224     for(t=0;t<abc->scripts->num;t++) {
 225         trait_list_t*l = ((abc_script_t*)array_getvalue(abc->scripts, t))->traits;
 226         for(;l;l=l->next) {
 227             if(IS_PUBLIC_MEMBER(l->trait)) {
 228                 traits[num_methods++] = l->trait;
 229             }
 230         }
 231     }
 232     qsort(traits, num_methods, sizeof(trait_t*), compare_traits);
 233     for(t=0;t<num_methods;t++) {
 234         trait_t*trait = traits[t];
 235         if(IS_PUBLIC_MEMBER(trait)) {
 236             U8 access = trait->name->ns->access;
 237             const char*package = strdup(trait->name->ns->name);
 238             const char*name = strdup(trait->name->name);
 239             char np = 0;
 240             memberinfo_t*m = 0;
 241             if(trait->kind == TRAIT_METHOD) {
 242                 m = (memberinfo_t*)methodinfo_register_global(access, package, name);
 243                 m->return_type = resolve_class(filename, "return type", trait->method->return_type);
 244             } else {
 245                 m = (memberinfo_t*)varinfo_register_global(access, package, name);
 246                 m->type = resolve_class(filename, "type", trait->type_name);
 247             }
 248             m->flags |= FLAG_BUILTIN;
 249             m->parent = 0;
 250         }
 251     }
 252 }
 253
 254 void as3_import_code(void*_abc)
 255 {
 256     import_code(_abc, "", 0);
 257     import_code(_abc, "", 1);
 258 }